AUTHOR=Kamphuis Saskia J. M. , Schaefer Dirk J. , Kaempfen Alexandre TITLE=Case Series: Free vascularized costochondral grafts in upper extremity reconstruction JOURNAL=Frontiers in Surgery VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2025.1478253 DOI=10.3389/fsurg.2025.1478253 ISSN=2296-875X